22402131 has 8 divisors (see below), whose sum is σ = 30676944. Its totient is φ = 14531040.

The previous prime is 22402091. The next prime is 22402169. The reversal of 22402131 is 13120422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22402131 - 2⁹ = 22401619 is a prime.

It is a super-2 number, since 2×22402131² = 1003710946682322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22402131.

It is not an unprimeable number, because it can be changed into a prime (22402531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100800 + ... + 101021.

It is an arithmetic number, because the mean of its divisors is an integer number (3834618).

Almost surely, 2^22402131 is an apocalyptic number.

22402131 is a deficient number, since it is larger than the sum of its proper divisors (8274813).

22402131 is a wasteful number, since it uses less digits than its factorization.

22402131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201861.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 22402131 is about 4733.0889490902. The cubic root of 22402131 is about 281.9008881620.

Adding to 22402131 its reverse (13120422), we get a palindrome (35522553).

It can be divided in two parts, 2240 and 2131, that added together give a triangular number (4371 = T₉₃).

The spelling of 22402131 in words is "twenty-two million, four hundred two thousand, one hundred thirty-one".